Gaussian Sampling over the Integers: Efficient, Generic, Constant-Time [chapter]

Daniele Micciancio, Michael Walter
2017 Lecture Notes in Computer Science  
Sampling integers with Gaussian distribution is a fundamental problem that arises in almost every application of lattice cryptography, and it can be both time consuming and challenging to implement. Most previous work has focused on the optimization and implementation of integer Gaussian sampling in the context of specific applications, with fixed sets of parameters. We present new algorithms for discrete Gaussian sampling that are both generic (application independent), efficient, and more
more » ... ly implemented in constant time without incurring a substantial slow-down, making them more resilient to side-channel (e.g., timing) attacks. As an additional contribution, we present new analytical techniques that can be used to simplify the precision/security evaluation of floating point cryptographic algorithms, and an experimental comparison of our algorithms with previous algorithms from the literature.
doi:10.1007/978-3-319-63715-0_16 fatcat:z4d7lkqllnhnfeggaz5q4gu3gu